About
RTK LLC is a small, independent software shop. It builds internet tools, runs them, and maintains them — the same people who write the code also answer the email.
Why so few products
Because maintaining software is the expensive part, not writing it. A shortener needs abuse handling, uptime and data retention that actually deletes things. An email analyzer needs its detection rules kept current as phishing changes. Both are worth doing properly or not at all, which is why there are two and not twenty.
What we think makes a tool worth using
- It says what it does and shows the evidence. A verdict without its reasoning is just an opinion with a colour attached.
- It is honest about limits. Analysis can be wrong. "No findings" is not "safe". The Email Analyzer prints that rather than hiding behind a green checkmark.
- It collects the minimum. No advertising trackers, no selling data, no keeping submitted content longer than the product needs it.
- It stays small. No feature arrives because a competitor shipped it.
How this site is built
Pages here are static HTML and a single stylesheet — no framework, no build step at request time, no third-party scripts. The products are Node/Express and Python/FastAPI, self-hosted and served through a CDN in front of a single origin.
Getting in touch
There is one address: [email protected]. It reaches the person who can fix the problem. See Contact for what to include so it can be answered in one reply rather than three.